Update readme

nicoSWD · nicoSWD · commit 2791929e49ee · 2021-01-24T17:22:27.000+01:00
diff --git a/README.md b/README.md
@@ -120,6 +120,7 @@ Comparison  | not equal to             | !=
 Comparison  | identical                | ===
 Comparison  | not identical            | !==
 Containment | contains                 | in 
+Containment | contains                 | not in 
 Logical     | and                      | &&
 Logical     | or                       | \|\|
 
